2-aryl-4,4-dialkyl-5-halomethylene-oxazolines

ABSTRACT

COMPOUNDS BELONGING TO THE CLASS OF 2-(MONO, DI OR TRI-SUBSTITUTED PHENYL) - 4,4-DIALKYL-5-HALOMETHYLENE-OXAZOLINES AND THEIR SALTS. THEY ARE SELECTIVE HERBICIDES AND FUNGICIDES.

United States Patent Claims ABSTRACT OF THE DISCLOSURE Compounds belonging to the class of 2-(m0no, di or tri-substituted phenyl) 4,4-dialkyl-S-halomethylene-oxazolines and their salts. They are selective herbicides and fungicides.

This application is a continuation-in-part of U.S. Ser. No. 829,084, filed May 29, 1969, now Pat. No. 3,661,991.

This invention is concerned with novel compounds belonging to the class of N-(1,1-dialkyl-3-chloroacetonyl)- 3-(or -3,4-, -3,5- or -3,4,5-) substituted benzamides. Their structure may be represented by the formula wherein X and X are selected fromthe group consisting of hydrogen, bromo, chloro, fiuoro, methyl, ethyl and trifluoromethyl groups with the proviso that only one of X and X' may be hydrogen;

Y is hydrogen, bromo, chloro, fluoro or methyl;

R and R are individually selected from the group consisting of methyl and ethyl; and

' n is an integer from 0 to 2 inclusive. At times these compounds will hereinafter be referred to as N-(1,1-dialkyl-3-chloroacetonyl)benzamides.

-The novel compounds of this invention provide a new class ,of' selective herbicides. They are effective at low dosagerates and are particularly active by preemergencetype application. Many of the major economic crops are tolerant to them. These compounds also possess fungicidal activity, particularly against Phycomycetes.

Somewhat related structures are known in the litera- 3,709,897 Patented Jan. 9, 1973 ice XI R1 o Y-Q-cwmnb-iionor 1 it t (III) R1 o Y-QC HJ J-bCm,

| 1 R X (IV) Typical compounds within the scope of Formula I include the following:

N- 1,1-dimethyl-3-chloroacetonyl) -3-chlorobenzamide N-( 1,1-diethyl-3-chloroacetonyl)-3-chlorobenzamide N-( 1,1-dimethyl-3-chloroacetonyl)-3,5-dichlorobenz amide N-( 1;1-dimethyl-3-chloroacetonyl)-3-bromo-5-chlorobenzamide N- 1, 1-dimethyl-3-chloroacetonyl)-3-chloro-5-methylbenzamide N-( 1,1-dimethyl-3-chloroacetonyl)-3-fluoro-5-methylbenzamide N-( 1, 1-dimethyl-3-chloroacetonyl)-3-ethyl-5-methylbenzamide N- 1,1-dimethyl-3-chloroacetonyl)-3-chloro-4-methylbenzamide N-( 1,1-dimethyl-3-chloroacetonyl)-3,4,5-trichlorobenzamide N- l,1-dimethyl-3-chloroacetonyl)-3,5-dichloro-4- methylbenzamide N- 1, l-dimethyl-3-chloracetonyl) -3,5-dibromo-4- chlorobenzamide N-( 1,1-dimethyl-3,3-dichloroacetonyl)-3-chlorobenzamide N- 1, l-dimethyl-3,3-dichloroacetonyl)-3-ethylbenzamide N-(1,1-dimethyl-3,S-dichloroacetonyl)-3-fluorobenzamide N-( 1, 1-dimethyl-3 ,S-dichloroacetonyl) -3 -methylbenz amide v N-( 1,1-dimethyl-3,S-dichloroacetonyl)-3-chloro-4-methylbenzamide N- 1,1-dimethyl-3,3-dichloroacetonyl)-3,5-dimethy1- benzamide N- l, l-dimethyl-3,3-dichloroacetonyl)-3,4,5-trichlorobenzamide N- l,1-dimethyl-3,3-dichloroacetonyl)-3,5-dichloro- 4-methylbenzamide N- 1,1-dimethyl-3,3-dichloroacetonyl) -3,5-dichloro- 4-bromobenzamide N- 1, l-dimethyl-3,3,3-trichloroacetonyl)-3-chlorobenzamide N-( 1, 1-dimethyl-3,3,3-trichloroacetonyl) -3-methylbenzamide N- 1,1-dimethyl-3,3,3-trichloroacetonyl)-3-bromobenzamide N- 1,1-dimethyl-3,3,3-trichloroacetony1)-3-trifluoromethylbenzamide N-( 1,1-dimethyl-3,3,3-trichloroacetonyl)-3-chloro-4- methylbenzamide N-( 1, l-dimethyl-3,3,3-trichlor0acetonyl) -3,5-dimethylbenzamide N-( 1,1-dimethyl-3,3,3-trichloroacetonyl)-3-chloro-5- fiuorobenzamide N-( l,1-dimethy1-3,3,3-trichloroacetonyl)-3,4,5-trichlorobenzamide N-( 1,1-dimethyl-3,3,3-trichloroacetonyl)-3,5-dichloro- 4-methylbenzamide N-( 1,1-dimethyl-3,3,3-trichloroacetonyl)-3,4,5-trimethylbenzamide The Y y nzamidcs m laAmtChemasoc. 88, 555.5. (1966)sandureferencescited of Formula II may be prepared by the chlorination of the therein. corresponding N-(1,l-dialkyl 2 propynyl) benzamide The hydrolysis of compounds of Formula VI is readily (Formula V), which produces a 2-phenyl-4,4-dialkyl-5- carried out with water using a water-miscible solvent,

chloromethylene-oxazoline (Formula VI), usually as the 5 such as an alcohol, e.g. ethanol, dioxane or acetic acid, hydrochloride, and this is then hydrolyzed to the N-(l,lpreferably with acidic catalysts. Ifdesired, a mineral-"acid dialkyl-B-chloroacetonyl) benzamide (Formula II). The such as hydrochloric or sulfuric acid, may be used to following equation depicts this reaction: facilitate the reaction. The hydrolysismay be run i njthe X R Y ---C 0 )NHCC :ECH G12 W HN' C-R f f 01 a o, For'nula II Y r t (VI) p I Compounds of the type of Formula V are known in temperature range of room temperature to reflux. The the literature. They may be prepared by the reaction of a hydrolysis times will'vary from a'few minutes to several benzoyl chloride with the appropriate propargyl amine 0 days depending upon the oxazoline hydrochloride being in the presence of an acid acceptor in accordance with the hydrolyzed, the temperature of hydrolysis and the solvent.

following equation Optimum conditions vary for the specific hydrolysis to X I v B1 I I v; Y C(O)Cl H NC--CJH Formula V L f m This amidation reaction is conveniently carried out in the be undertaken. It is desirable to avoid conditions which presence of an inert organic solvent in the temperature would give hydrolysis at the amide linkage of the desired range of 0 to 50 C. benzamide into its component parts. One convenient When a compound of Formula II is desired, the chlomethod for isolating the henzamides of Formula IIis to rination of a compound of Formula V is carried out in add Water to the reaction mixture in such an amount 'to' the presence of a solvent in which the starting benzamide just start precipi ation and to allow the product to crys- (Formula V) is substantially soluble, but in which the tallize out. In this manner products requiringn'ofurther oxazoline hydrochloride of Formula VI is essentially inpurification are often isolated. s soluble. In this manner the oxazoline hydrochloride is re- Goodman and Winstein, J. Am. Chem. Soc. 79, 4789 moved from the sphere of the reaction and over-chlorina- (1957) have reported on the hydrolysis' ofa relafcd tion is avoided. Otherwise compounds of Formula VII OXaZOliHium hlomidey 110K301l that the bleatagey'of result. Suitable solvents for this reaction include ethers, th ing c urred at the C-N linkage and resulted in a such as ethyl ether and dioxane; chlorinated solvents, v benzoic acid ester rather than a benzamide. such as ethylene dichloride; and esters such as ethyl ace- A compound of the yp of Formula HI y b p tate. In preparing the monochloroacetonyl derivatives pared y t e c lorination of a compound of Forriuila VI (Formula II) the use of an excess of chlorine is to be to give a -P Y y lt avoided. Other chlorinating agents, such as N-chlorosuc- OXaZOhhe hydfhchlofide, Which "P hy y gives an: cinirnide and sulfuryi chloride, may be used, but chlorine -(L y vdichhm)wfitohyl)' hehllhid is preferred. A catalyst such as phosphorus trichloride mhla D- The following equation 416F335 thisi v sometimes aids the reaction. The chlorination reaction may be run in the temperature range of -50 to 250 C., R preferably 0-100 C. In cases where the nitrogen atom i 2 I of the oxazoline ring is highly sterically hindered, the i care must be taken to avoid overchlorination. In these Y' -lb cl hydrochloride of the oxazoline does not precipitate and cases the chloromethylene oxazoline (the free base of a Formula VI compound) is isolated upon removal of the solvent.

It should be noted that the stereochemistry of the hy- (VD drogen and chlorine substituents on the exocyclic S-methylene group of Formula VI compounds has not been HN JR H1O determined, but a single isomer is indicated by the sharp- Y g CDCH C1 016 ness of the n.m.r. spectra. Previous reports on the stereoa chemistry of additions to acetylenes haveshown that a O Fotmma HI prediction would be dangerous, e.g. see Fahey and Lee,

The chlorination of a compound of Formula VI is preferably run in a solvent. Solvents of the class of chlorinated hydrocarbons, such as carbon tetrachloride, ethers and esters are suitable. Chlorine is the preferred chlorinating agent although other chlorinating agents well known in the art may be used. Excesses of the chlorinating agent up to two times the calculated amount may be used; The reaction temperature may be in the range of 50 to 250 C., preferably 100 C.

The hydrolysis of a compound of Formula VII to give a compound of Formula III is carried out in the same manner as described above for the hydrolysis of a com pound of Formula VI. v

A compound of Formula IV may be produced by the chlorination of a compound of Formula II or III. The chlorination is preferably run in a solvent such as a chlorinated hydrocarbon, e.g. carbon tetrachloride, an ether or an ester. The reaction temperature may be in the range of -50 to 250 0., preferably 0"to 100 C. A catalyst such as ultraviolet'light, ferric chloride or benzoyl peroxide may be used to facilitate the reaction.

An alternate method for the preparation of the compounds of Formula I is by the chlorination of the parent N-( 1,1-dialkyl-3-acetonyl) nuclear-substituted benzamide.

The following equation depicts this:

R1 o 1% Y -C(0)NH on, 012

Formula I (VIII) The same chlorinating conditions as given above for the chlorination of a compound of Formula II or III may be used. Mixtures of compounds of Formula II, III or IV may result. This method is best suited for the preparation of a compound of Formula IV since this avoids a separation of a mixture.

The benzamide. structures of compounds of Formulas II, III and IV were confirmed by their i.r. and/or n.m.r. spectra.

Specific illustrative preparations of Examples 8, 13, 14 and are set forth below.

Example 8.Preparation of N-(1,1-dimethyl-3-chloroacetonyl -3,5-dichlorobenzamide (a) Preparation of 2-(3,5-dichlorophenyl) 4,4 dimethyl-S-chloromethylene oxazoline hydrochloride.-A stream of chlorine was rapidly passed into a solution of N-(1,1-dimethylpropynyl)-3,5-dichlorobenzamide (200 g., 0.782 mole) in ethyl acetate (600 ml.) at 60 C., with stirring until the theoretical amount (55.4 g., 0.78 mole) was absorbed as measured by an in-line flow meter. During the addition a solid separated and after cooling was filtered off and dried to give 254.4 g. of solid melting at 154-157 C. This was a quantitative yield of 2- (3,5-dichlorophenyl)-4,4-dimethyl 5 chloromethylene'-oxazoline hydrochloride. 4

(b) Preparation of N-(1,l-dimethyl-3-chloroacetonyl)- 3,5-dichlorobenzamide.2-(3,5 dichlorophenyl)'-4,4-dimethyl-5-chloromethyleneoxazoline hydrochloride (245 g., 0.75 mole) was heated on a steam bath for minutes in a mixture of ethanol (1750 ml.), water (500 ml.), and a solution of concentrated hydrochloric acid ml.) in water (100 ml.). More water (500 ml.) was then added and the solution set aside to cool. Needles separated and were filtered off to give 153.5 g. of solid melting at 161 C. After recrystallization from aqueous methanol, it melted at 161 to 163 C. The product was a 63% yield of N-(1,1-dimethyl-3-chloroacetonyl)-3,5- dichlorobenzamide.

Example 13.Preparation of N-(1,1-dimethyl-3,3-dichloroacetonyl)-3,5-dichloro-benzamide (a) Preparation of 2- (3,5-dichlorophenyl)-4,4-dimethyl-S-chloro 5 dichloromethyl-oxa zoline hydrochloride and its free base.Excess chlorine was passed into a solution of N-(1,1-dimethylpropynyl)-3,5-dichlorobenzamide (25.6 g., 0.1 mole) in carbon tetrachloride (250 ml.) heated under reflux. On cooling, crystals separated and were filtered off to give 34 g. of solid. This was an yield of 2-(3,5-dichlorophenyl)-4,4-dimethyl-5-chloro-5-dichloromethyl oxazoline hydrochloride. I

A small sample of this oxazoline hydrochloride was treated in ether with aqueous sodium carbonate to give the free base. The product was recrystallized from hexane to give a solid melting at 949S C. It was found to contain by analysis 40.5% C, 2.6% H, 48.7% C1, 3.8% N and 5.1% 0; calculated for C H CI NO is 39.0% C, 2.8% H, 49.0% C1, 3.9% N and 4.4% O. The product is 2-(3,5-dichlorophenyl)-4,4-dimethyl 5 chloro-5-dichloromethyl-oxazoline.

(b) Preparation of N-(1,1-dimethyl 3,3 dichloroacetonyl)-3,5-dichlorobenzamide.2 (3,5 dichlorophenyl)-4,4-dimethyl-5-chloro 5 dichloromethyl-oxazoline hydrochloride (106 g., 0.266 mole) was heated under reflux in ethanol (1500 ml.) in the presence of concentrated hydrochloric acid (10 ml.) and water (65 ml.) for 30 minutes. The mixture was then diluted with water (350 ml.) and allowed to cool. A solid separated and was filtered oif giving 65 g. of solid melting at 155 to 157 C. This was a 64% yield of N-(1,1-dimethyl-3,3- dichloroacetonyl -3,5-dichlorobenzamide.

Example 14.-Preparation of N-(l,1-dimethyl-3,3,3- trichloroacetonyl) -3 ,5 -dichlorobenzamide Chlorine was passed into a mixture of 70% N-(1,1-dimethyl-3,3-dichloroacetonyl)-3,5-dichlorobenzamide and 30% N-(1,l-dimethyl 3 chloroacetonyl)-3,5-dichlorobenzamide (52.5 g.) in carbon tetrachloride (525 ml.) at 55 C., while the solution was irradiated with an ultraviolet lamp. After the theoretical quantity of chlorine had been absorbed, the solution was allowed to cool and crystals separated and were filtered off to give 25 g. of solid melting at 137.5 to 140 C. Recrystallization from benzene gave 14.5 g. melting at 144 to 144.5 C. The product was a 42% yield of N-(1,l-dimethyl-3,3,3-trichloroacetonyl)-3,5-dichlorobenzamide.

Example 15.-Preparation of N-(1,1-diethyl- 3-chloroa'cetonyl)-3,5-dichlorobenzamide (a) Preparation of N-(1,l-diethylpropynyl)!3,S-dichlorobenzamide.An ether solution of 3,5-dichlorobenzoyl chloride (47 g., 0.225 mole) was allowed to react with 25 g. (0.225 mole) of 3-ethyl-3-aminopent-l-yne (available by the method of Hennion and Teach, I. Am. Chem. Soc. 75, 1653 (1953), boiling point 114 to 118 C.) in the presence of 18 g. (0.225 mole) of 50% aqueous sodium hydroxide solution. The isolated product was recrystallized from benzene/hexane to give 42.5 g. of white solid melting at 98 to C. It was found by analysis to contain 59.5% C, 5.3% H, 4.9% N, 5.8% O and 24.6% C1; calculated for C H Cl NO is 59.2% C, 5.3% H, 4.9% N, 5.6% O and 24.9% C1. The product is a 69%i yield of N(1,l-diethylpropynyl)-3,5-dichlorobenzam e.

(b) Preparation of 2-(3,5-dichlorophenyl)-4,4-diethyl- 5-chloromethylene-oxazoline.--A stream of chlorine was rapidly passed into a solution of N-(l,l-diethylpropynyl)- 3,5-dichlorobenzamide (14.2 g., 0.05 mole) in 300 ml. of diethyl ether until the theoretical amount (3.6 g., 0.05 mole) was absorbed as measured by an in-line flow meter. After stirring a further 15 minutes the solvent was removed and the residue was purified by extraction into pentane. Removal of the solvent gave 16.9 g. of white oil, whose infrared spectrum was consistent with an oxazoline base. The product is a quantitative yield of 2-(3,5-

In'Table II the preparation identities are those given in Table I and the analytical figures in parentheses are those calculated from the empirical formula.

Preparation 7 v was heated under reflux overnight in a mixtureof 100 cc. of ethanol, ml. of water and 2 cc. of concentrated hydrochloric acid. Water (200 ml.) was then added and the gummy precipitate was washed free of starting material with pentane to give 3.5 g. of solid melting at 1725' to 176 C. The product was a 28% yield of N-(1,1-di ethyl-3-ch1oroacetonyl)-3,5-dich1orobenzamide.

PREPARATIONS S AND T Preparation of 2-(3,5-dichlorophenyl)-4,4-dimethyl-5- bromomethylene-ozaxoline hydrobromide and its free base (a) Preparation of 2-(3,5-dichlorophenyl)-4,4-dimethyl-5-bromomethyleue-ozaxoline hydrobromide.N (1,1- dimethylpropynyl)-3,S-diehlorobenzamide (20 g., 0.078 mole) was dissolved in boiling carbon tetrachloride (250 ml.). A solution of bromine (12.6 g., 0.08 mole) in carhon tetrachloride ml.) was added dropwise at reflux in 15 minutes. The mixture was cooled and filtered. The residue was dried overnight in a vacuum desicca- 20 tor to give 19 g. of solid melting with decomposition at 215-230" C. The product was identified as 2-(3,5-dichlorophenyl)-4,4-dimethyl-5-hromomethylene-oxazoline hye .m 2 2 m m mam wh n am n a w mhmmmmmwmmmnnmwwnammm m m m m aise asasnzs flesa ujafl 111.111111..111.11 m w m n oeccmo caoecw ocewaoew mww o m mmmmm wwmommmmm we ewmwuoeewmwoenon Hwn ku mfis flneamsm m 58 6 7545 645 4 n 0 a v. r n no u n n u n 0 y B I b m m a. N anemone om. seem a a m m m m m oewwddoeee deed o e m "w m m 18 109 053 8 33 0 2 UD m eeeeaaas4seshr as h 1 n O 1N v. D. m I. O V. m 0 M. n H @3 23 mem m, m m m m eeeooooeeoweee we .m H0 5 553784646Rw 1640 9 1 m. mm m aeesasaaas sea 2 a on 3 b n w bbm Ee 1C 1 L gamma m m mmmmm mm c a moooomonq men o m m m m mwwwwmmmww mmww o m w w m 0 mna i a a .s m eemmnnmgmnmann hswomm mmmm ct d 6 3 dT a mfl m mdmwd mamm m m mummy m cu m po p mmm n 4 4 v m a m m wfl 1 1 1 1m S \I S 1 i l wmm w mnww mm a m mmmmm mmm m 1 wma sr mum h 1 m eno n om h m) omt h d .m m noNo o Nh wmo mv mmmw me mm a wmrmnnmmmm Nmm m w y 1 11 .11 11 111.1 mmnm m W 2 n H. i 4m ewmm m4 1 a m nishes? an; a m a muo m E cmmmmmmcoooococo eu mHm 0 o.m .ma m m o n: "TI." ts m r5lrm in n "III". .aeg.l 6 m0 H mm nd flmz z m u .n I I" n n mm m e m an" IHIIU fhmmh m w. m n m z m m: m m ne nva c e l 8 n..... mmmm m w m h isaaaaaan.. Rh. 3 T atl fl S d ma o. wmwm wwdanmmwm 1 mmmnm mw m fi Y ood m aw a f. f l\. S 0. m v w mw 7.mm wmm w em mm fii m r. t d flmfiaTmmewwfl mo 10 TABLE III The compounds of this invention were evaluated in a Compounds oftheformllrla standard greenhouse test known as a preliminary herbi- 0 CH8 0 cidal evaluation. For these tests seeds of selected crops a j l] 01 and weeds were planted in soil in pots. For preemergence Y NH 5 tests, these pots were treated immediately with the test HI compound. "For postemergence tests, the seeds were (Ha) allowed to germinate and the plants to grow for two weeks Melting at which time they were treated by foliar application X point 0. with the test chemical. In both types of test the rate of 10 application was 10 pounds per acre (11 kilos per hec- Example 000 0 000000 d .a F W h m h M m w m m 939m m%%947753 oe me b i N m mmswwue mw e 0 e lm m n 0; T i t t. .w d II\ S s t alt m w m c mm m n t .n ap .1 0 00 0000 00 ls t t 09103 0 00 09 9 m 2. P WM m m m 1 m w a m m wwmwmmm wm m mmmmnmm a mm mhe F SOT .1 H r l c S c 0 Lmmx mn M m mmm m M a d e M \I u f H w W 6 t u m mwua/mw @(OIW) t 0000 000000000 0 t k m .l m 0 6 h e m d L55 3)4L m 04 )3 3%)L7 L 9w 0808mm58080768 W u w a Wm flwflunuum fl@( uw(muuw 1 1 1 1 1 o m R m mfl ma m nne lafi fisal lol an w man.m(xema omd odn wnwwmemuaaama maa num s d al e gie P l A t wwwsmflwin saw mu m mmmmammammmmmrdmm mam a 0 PO 0 a 0 e D D W d 6 w (zl (i [,1 M k t 0500 000000000 M s n c nfim n 1 m wm m m mmmm 0 m t .1 0 P O 07 .6 .004 .06 .356 0 n u wm a M e P 0 1"2 "2 &0 n2 0 "9 &a 0 Wm mmhw mmmmm mh mm OOmGmU OmOUmHM m 0 C. Tu f 50 .0 .6 .5 .26 0 r e .l mmflwmmw mm mmm mmm mmmmmm mmmmm 1w Mm0000 000000000 I e. e 0 a a mmwn wmmmmm a m m m m 00 10 00 1 Pea fm m e E flan wamem mmfiwmm d mn mma N onowmmmwwmQwnnm m mm rwwahmm mdmwsww w m 066606800600000 Am m u r'mwtuutpn d m W 6 0 0345755714700 Ti 8 m 0000 00000900 0 ud a S m a a r u m w e Q OOQ B QBB F mm vw ma e vm wn enm m P 455544344 4443 m m e 11 t p 3 g 0 i V. 6 m m m mwn m mm M W mm H h f O e I i ma h wcv cFm tu m m H nmnwwmmnomnmnw m 0 050000000005000 t a 0 0 u I 0 v. u- 4 5 6 4 6 3 4 64 4 324 n u 0 0909799090 997 5 0 5 0 C m e H 1 1 1 1 1t. 2 2 3 S OHC 11.200282045214000 u H fi e m .0 2575515 525 d l 2 455646344644325 I nawmaaw w .0% m RiOHIR m nmwm ww mamam 00 .4 E m n 0 w aa w n i m 0 m m one 7 m a wmm mwmswmmwmmm 1 11 1 1 w u m b c mwmwwmwmwmmwmmfl m 0 1 d 1 n 7 2 & m d M To wmmwmwwwm umewm e m n M 49003740073 83.90 4 m 0 m x nmwmmwmwomweeno m m l HHHHHHHHHHCF C m vr M 1w Ii 3 m 0I,. V z m m m 1 C W RC |R aa m E I 3 h rIH E ZHH? w HHHHHHBCFOHH mm m m R 000 us 7 a m S 2 2' O 2 l t d 2 n mm O2 2Nm 2m m w w m Tu .m OWO N0 N a O .0 ON NFNMNNFNNFNNN S, o. m rhmlllrhhlhhhhh w. r m ma m BoccwcBccccscwo m B .1 UHHHXVHWHHHHHUIM c p HHHHHHHHHHH HHH m n l l muumumunnunminnuw 0 O m E CCCCOOCCCCCCCCC a n D. n u u n I: I "u. m u n I: n" a e a g 1 u u m LI: "m u D. m "nu" n.... m a x LnLnLA -LQM-IDOQIHW E E TABLE VI. Continued Flax Tomato Velvet Wild oat Millet Ryegrass Sorghum Curly dock leaf Example Percent kill (postemergence tests) planted in flats. For this test the amount of toxicant was Table VII gives the results.

TABLE VII [Secondary herbicidal evaluation (4 lbs. /a.)]

Percent kill of plant species-preemergence tests Example u mm a mwm mm a 0 mmmsm mm m oooe o ommoomooo Postemergence tests 0 mumoanoooowao 4 pounds per acre (4.4 kilos per hectare). The plant species From Table VII it is noted that good selective herbiused were cidal action is obtained and particularly tolerant crops include corn (1'), cotton (T'), rice (H'), soybean (P') and 'lar to the above was run except that the test compound was incorporated into the soil, fewer plant species were used and two new species .8 S n t a am f e C S e m w w M w den 3 u a. a mm m h t m T m d 4% I m e 1 Ce d msw (e d t .1 a X t .19. OH W E 21.1.. h e I! W w UV 5 0 5 6 cm d .I a m m m m m mm n a nm ac ea a D an" M .r u m m .V a Wm ns mm m fmmm m wmmmm mm wemh w mwa O TO C 8 BDSTLASEOZ ....mm... t......... na n n n "a n n s n m Mm m w$ rfi.. na.. oq tt onv... d e w an kammeld n yr w u mW WS m "'I 'I mABcDEFGHr m Dicotyledonous plant: This method could be important in special I mustard Brasszc kaber. Such as where furrow irrigat K wild carrot Daucus carota.

u a a h n a m e .m m. a P m s a a n w m H a a t rs a P n .36 m n m. 0C s a M e t m t in it. The

In carrying on in flats, covered with a piece of cheesecloth and then with about three-fourths inch of soil. The flat was then sprayed with the compound at a rate of 4 lbs. per acre.

The compound was then incorporated into the upper three fourths inch of soil by lifting up the cheesecloth and mixing the so placed over the seed and the evaluation continued as for a regular preemergence test. Table VIII gives the results.

mum.

rispus.

s1 zcago sativa.

TABLE VIII [Herbicidal evaluations by soil incorporation] Percent kill of plant species B C D E F" G H I U K M N P Q R 'I" V 80 95 0 90 100 40 0 100 50 100 100 0 70 0 0 100 20 100 20 so so so 100 so 100 50 0 so 0 0 so 100 100 0 95 so 20 50 100 30 100 50 0 so 0 0 100 0 100 20 90 70 30 0 90 o 100 0 0 90 so 0 90 100 10 100 20 so 90 70 20 100 100 100 30 0 so 0 o 100 0 0 7 20 70 40 0 30 70 20 100 0 o 0 30 0 30 90 0 100 20 70 90 4o 20 100 so 100 20 0 90 90 0 90 100 10 100 20 90 100 90 30 90 90 100 0 0 so 70 0 100 100 20 100 20 100 100 90 30 100 90 100 20 0 s0 70 0 90 100 10 100 20 100 100 so 0 100 0 100 0 o 90 70 0 80 20 20 so 0 30 100 0 0 0 100 0 0 e0 60 0 100 90 30 90 20 90 100 so 30 50 100 50 0 60 so 90 100 100 0 100 90 so 99 2o 0 100 0 100 0 50 90 a0 0 0 so 0 100 0 20 40 o 0 so 50 so 0 70 0 l0 0 o 100 20 so so 0 0 70 100 100 0 20 9o 30 0 40 In field tests, the compound of Example 8 has given sodium sulfates, calcium alkylbenzenesulfonates and sodigood control of ragweed (Ambrosia spp.), giant foxtail urn dialkyl sulfosuccinates. Representative of the cationics (Setaria faberi) and Wild lettuce (Lactuca spp.). Such are (higher alkyl) dimethylbenzylammonium chlorides. crops as corn, cotton, soybean, tomato, cucumber (Cu- 20 Representative of the nonionics are condensation products cumis saliva) and peanuts (Arachnis hypogaea) have of alkylene oxides with fatty alcohols, alkyl phenols, merhown toleran e to it. captans, amines or fatty acids, such as dinonylphenoxy- Herbicidal activity has been noted for the intermediate p y yq a 1n whlch there are 8 to 100 ether upoxazoline hydrochlorides (Formula VI) and their free lngs and P Y 3f comPounds Prepared i bases. Typical results are given in Table IX for Preparaother hxdrophlhc groupmgs, lncluqmg eStCIIS of long cham tions B H and I of Table I at 4 pounds per acre by the fatty acids and manmtan or sorbitan, which are reacted 9 soil incorporation procedure described above. The plant f f z g fg i g gg' 0 Mon at t 1 f mul b1 species designations are the same as those given above as concentrate g g z whesn a g 5 52 s S1 a 3 used in Tables VII and VIII. Two additional plant species used in this test were Parts/100 parts total N-(1,1-dialkyl-3-chloroacetonyl) benzamide 10 to W' JohnsongrassSorghum halepense Solvent 55 to 88 X peas-Pisum sativum Emulsifying agent 2 to 10 TABLE IX [Herbicidal evaluations by soil incorporation] Percent kill of plant species B! CI DI El F! G! H! I! K! MI N! O! P! Q! R! S! T! U! W! X I so 0 70 o o 70 0 0 0 100 0 o o 0 100 0 5o 0 100 20 70 90 a0 20 0 100 0 o 0 0 100 0 so 0 50 0 90 0 40 80 0 0 0 100 0 20 0 0 70 o no 0 70 10 e0 20 0 0 100 0 40 0 0 50 40 0 100 10 so 20 90 90 20 0 so o 100 0 s 100 0 100 20 100 90 90 100 30 30 0 0 100 0 0 100 70 90 0 20 99 30 100 0 0 100 100 0 100 40 50 0 0 99 0 90 0 95 20 95 0 60 100 40 0 100 100 0 100 0 9o 0 0 100 0 e0 0 90 10 0 40 100 -100 90 0 5o 90 0 90 e0 0 100 90 so 0 99 20 99 30 60 99 20 0 0 100 0 100 o 90 0 0 100 0 s0 0 5o 0 o 0 50 30 20 0 9o 0 0 0 0 0 0 0 90 so 0 0 0 0 0 0 0 0 0 0 o 0 o 0 0 0 0 0 0 0 0 so 0 so 0 so 0 80 0 0 100 0 90 o 0 100 90 so 0 o 0 0 0 0 0 0 0 0 0 50 o 0 so 0 0 o 0 o 0 The compositions of this invention comprise an N- l,1-dialkyl-3-chloroacetonyl)-3-(or -3,4-, -3,5- or -3,4,5-) substituted benzamide together with an agronomically acceptable carrier. By an agronomically acceptable carrier is meant any substance which can be used to dissolve, disperse, or diffuse the chemical within it, without impairing the effectiveness of the toxic agent, which is not permanently deleterious to the soil in any chemical or physical manner and which is usually nonphytocidal to the agricultural crops to be protected. The compositions may be in the form of solutions, emulsi-fiable concentrates, wettable powders, granules or dusts. One or more liquid or solid carriers may be used for a particular herbicidal composition.

An emulsifiable concentrate is made by dissolving an N- l,1-dialkyl-3-chlor0acetonyl) benzamide in a solvent to which one or more surfactants are added. Suitable s01- vents or liquid carriers for use in preparing these emulsifiable concentrates may, for example, be found in the hydrocarbon and ketone classes of organic solvents such as xylene, acetone, isophorone, mesityl oxide, cyclohexanone and mixtures of these. Preferred solvents are ketonehydrocarbon mixtures such as isophorone-xylene. The emulsifying agents used are surfactants of the anionic, cationic, or non-ionic types and mixtures thereof. Representative of the anionic surfactants are fatty alcohol Wettable powder formulations comprise an N-(1,1-dialkyl-3-chloroacetonyl) benzamide admixed in a solid carrier along with a surface active agent(s) which gives this type of formulation its wettability, dispersibility and spreading characteristics. Solid carriers which are suitable for preparing these wettable powder formulations are those which have been rendered agronomically suitable by pulverizing devices and may be organic or inorganicin nature. Suitable organic carriers are soybean, walnut or wood flower or tobacco dust; and suitable inorganic ones are clays of the montmorillonite (bentonite), kaolinite or fullers earth types; silicas such as diatomaceous earth and hydrated silica; silicates such as talc, pyrophyllite, or alkaline earth silicates, and calcium and magnesium carbonates. A surfactant or mixture of surfactants is added to the wettable powder formulation. Suitable dispersing agents are sodium lignin sulfonate, sodium formaldehydenaphthalene sulfonate, or sodium N-methyl-N-higher alkyl taurates. Wetting agents useful for this purpose include higher alkylaryl sulfonates such as calcium dodecylbenzenesulfonate, long-chained alcohol sulfates, sodium alkylphenoxypolyethoxyethyl sulfonates, sodium dioctyl sulfosuccinate, and ethylene oxide adducts with fatty alcohols or with higher alkylphenols, such as octylphenoxypolyethoxyethanol in which there are 8 to 80 other groupings and similar polyethoxy compounds made from stearyl alcohol. Operative spreading or adhesive agents include glycerol mannitan laurate or a condensate of polyglycerol and oleic acid modified with phthalic anhydride. Additionally, many of the surfactants discussed above function as spreading and adhesive agents. The active ingredient content of the wettable powders may be in the range of about 20% to 80%, however, the preferred range of coneentration is 50% to 75%.

The following compositions are typical for wettable powder formulations:

Parts/100 parts total N-(l,1-dialkyl-3-chloroacetonyl) benzamide 20 to 80 Carrier to 79 Surfactants 1 to 10 Dust concentrates are made by incorporating an N- (1,l-dialkyl-3-chloroacetonyl) benzamide of this invention into a solid carrier such as finely powdered clays, talc, silica and synthetic silicates, alkaline earth carbonates and diluents of natural origin, such as tobacco dust or walnut shell flour. Granular formulations are made from similar type solid carriers except that the particle size is larger, in the range of to 60 mesh. A small amount of dispersing agent may be incorporated into these solid formulations. The concentration of active ingredients in these dust 0251111111181 formulations may be in the range of 0.5 to 1 0.

It will be seen from the above that the compositions of this invention may contain to 99.5% of carrier based on the total weight of the composition, depending on whether it is in the form of a solution, an emulsifiable concentrate, a wettable powder, a dust or a granular formulation.

A particularly convenient method for making solid formulations is to dissolve the active ingredient in a volatile solvent, such as acetone, apply this solution to the solid carrier with thorough mixing, and then remove the solvent by allowing it to evaporate at either normal or reduced pressure.

Generally for use as herbicides the active ingredient is applied at the rate of about 0.5 to 10 or more pounds per acre (0.55 to 11 kilos per hectare) with 1 to 4 pounds per acre (1.1 to 4.4 kilos per hectare) preferred.

Representative compounds of Formula I have demonstrated good fungicidal activity for the control of fungi in the class of Phycomycetes. The class of Phycomycetes includes such genera as Phytophthora, Plasmopora, Peronospora and Pseudoperonospora. These compounds have not shown a high degree of fungicidal activity against the classes of fungi known as Fungi Imperfecti and Ascomycetes.

Tests involving the control of late blight, Phyrophthora infestans, of potato and tomato were run as described below. Succulent 6-8 inch high (4-5 week old) potato plants and 3-4 inch high tomato plants were used. The plants were sprayed with a 1200 p.p.m. solution of the test compound in a solvent system consisting of acetonezmethanolzwater at :25:50 by hand spraying to just wet the foliage with a minimum of run-oif. The plants were then allowed to dry and placed in a greenhouse for 2-3 days. The plants were then subjected to simulated rain by overhead spraying with a garden hose equipped with a Fogg-it nozzle placed about 3 feet above the plants so that ap proximately 1 inch of rain was delivered in about 2.5 minutes onto the foliage as a fine spray. The plants were then inoculated with a spore suspension of Phytophthora infestans containing 30,000-40,000 spores per cc. The plants were then placed in a 100% humidity chamber at 60 F. for about 36 hours then moved to a 70 F. growing room for 1-2 days. The percent disease that had developed in comparison with untreated controls was then read by means of lesion counts. Table X gives the results with representative compounds of this invention.

TABLE X [Control of Phytophthora infesians] Percent disease on Representative compounds of Formula I were found to control the grape downy mildew organism, Plasmopora viticola. In this test 6-8 inch high Seibel grape seedlings were sprayed to run-oft using a series of dosages of spray mixtures containing 1200 ppm, 300 ppm. and 75 p.p.m. of the test compound. Three replicates for each dosage were used and untreated plants were employed as controls. The plants were held for 24 hours and were then inoculated with a spore suspension of Plasmopora viticola containing about 75,000 spores per cc. The plants were then held for 1 week under controlled temperature and humidity conditions until the downy mildew disease developed. The percent control was then observed. Table XI gives the results.

Representative compounds of Formula I were evaluated for the control of downy mildew on broccoli caused by Peronospora parasitica. In this test, the test compound was dissolved in a 50:50 acetone-methanol solution and diluted with water to give concentrations of 1200 p.p.m., 300 ppm. and ppm. of the compound. Each concentration of each compound was then sprayed to run-off onto three 4-5 inch high broccoli seedlings and the plants allowed to dry. The treated plants were then weathered in a humidity cabinet overnight and again allowed to dry. The plants were then inoculated with a suspension of Peronospora parasitica spores containing about 10,000 spores per cc. The plants were then held for 6 days to allow the disease lesions to develop and the amount of disease determined based on an index rating of 0-4 where 0=no infection and 4=severe infection. Table XII gives the results.

In field tests, the compounds of Examples 8 and 14 Rating: Percent disease control A 90-100 B 70-90 C+ Less than 70 C No control Table XIII gives the results for typical preparations of compounds of Formula VI and their free bases at two dosage rates.

TABLE XIII [Control of Phytophthora infestans] Rating at- 1,200 Preparation I p.p.m.

I See Table I.

Oxazoline salts conforming to the structure wherein R R X, X and Y have the meanings given above for Formula I and Hal is bromine or chlorine or a mixture thereof and their free bases have also demonstrated excellent fungicidal activity.

A compound of Formula IX where Hal is bromine may be made by a bromination sequence of compounds in which C1 in the equations given above is replaced by Br The following equations depict this.

0 x il I--- ctamcaer (XII) 2-(3,5-dichlorophenyl)-4,4-dimethyl-E-chloro-B-dlchloromethyl-oxazoline hydrochloride (see Example 132.

above). P 2-(3,5-dichlorophenyl)-4,4-dlmethyl-5-chloro-5- dichloromethyl-oxazoline) see Example 135. above). Q 2-(3,5-diehlorophenyl)-4,4-dimethyl-5-bromo-5- dibromomethyl-oxazoline hydrobromide. This is a solid melting at 210 C. (with decomposition). It was found to contain by analysis: 25.0% C, 1.9% H, 54.5% Br, 11.9% CI 2.5% N and 3.5% 0; calculated for c zH Br cl Nb-HBr is 24.6% C, 1.9% H, 54.6% Br, 12.1% 01, 2.4% N and 2.7% O.

R 2-(3,5-dichlorophenyl)4,4-tlimethyl-5-bromo-5-dibromoethyl-oxazoline. This is a solid melting at C. (with decomposition). It was found to contain by analysis: 29.4% 0, 2.0% H, 46.9% Br, 14.1% CI, 2.9% N and 3.9% O; calculatedtor CrzHmBIzClgNO gs 21g, 0, 2.0% H,48.4% Br, 14.3% 01, 2.8% N and Table XIV gives the fungicidal results for typical compounds of Formula IX and their free bases when evaluated on Phytophthora infestans by the technique described for Table XIII and on Plasmopora viticola by the technique described for Table XI.

In persistency-type tests wherein the treated plants were weathered by means of rain before inoculation Preparation Q gave excellent results for the control of Phytophthora infestans and Preparation R gave excellent results for the control of Plasmopora viticola.

For use as fungicides the N(l,1-dialkyl-3-chl0roacetonyl)benzarnides and the oxazoline structures of Formulas VI and IX are usually formulated. =Emulsifiable concentrates, fiowable emulsion concentrates and wettable powders are typical formulations. They may also be dissolved in water-miscible solvents to give solutions which may be easily extended with water. Dilute sprays of the compounds may be applied at concentrations of 0.05 to 10 pounds (0.023 to 4.5 kilos) per 100 gallons (378 liters) of spray and preferably at 0.1 to 2 pounds (0.045 to 0.9 kilo) per 100 gallons of spray. In more concentrated sprays, the active ingredient is increased by a factor of 2 to 12. With dilute sprays, applications are usually made to the plants until run-off is achieved, whereas with more concentrated sprays the materials are applied as mists. For practical purposes, the compounds of this invention should be used as foliar fungicides only on crops which are tolerant to an amount which is fungicidally effective.

'When a chemical preparation results in a mixture of products, such as when the chlorination of a compound of Formula VIII gives more than one product, the mixture may be used as such without separation of the individual components.

The compounds of this invention may be utilized as the sole biocidal agent or they may be employed in conjunction wtih other biocidal agents such as bactericides,

fungicides, herbicides, insecticides, miticides and comparable pesticides.

Other herbicides which can be incorporated to provide additional advantages and efiectiveness include:

Carboxylic acids and derivatives 2,3,6-trichlorobenzoic acid and its salts 2,3,5, 6-tetrachlorobenzoic acid and its salts 2-methoxy-3,5,6-trichlorobenzoic acid and its salts 2-methoxy-3,6-dichlorobenzoic acid and its salts 2-methyl-3,6-dichl0robenzoic acid and its salts 2,3-dichloro-6-methylbenzoic acid and its salts 2,4-dichlorophenoxyacetic acid and its salts and esters 2,4,5-trichlorophenoxyacetic acid and its salts and esters (2-methyl-4-chlorophenoxy)acetic acid and its salts and esters 2-(2,4,S-trichlorophenoxy)propionic acid and its salts and esters 4-(2,4-dichlorophenoxy)butyric acid and its salts and esters 4-(2methyl-4-chlorophenoxy)butyric acid and its salts and esters 2,3, fi-trichlorophenylacetic acid and its salts 3,fi-endoxohexahydrophthalic acid dimethyl 2,3,5,6-tetrachloroterephthalate trichloroacetic acid and its salts 2,2-dichloropropionic acid and its salts 2,3-dichloroisobutyric acid and its salts Carbamic acid derivatives ethyl N,N-di(n-propyl)thiolcarbamate propyl N ,N-di (n-propyl thiolcarbamate ethyl N-ethyl-N-(n-butyl)thiolcarbamate propyl N-ethyl-N-(n-butyl)thiolcarbamate 2-chloroa1lyl N,N-diethyldithiocarbamate N-methyldithio-carbamic acid salts ethyl 1-hexamethyleneirninecarbothiolate isopropyl N-phenylcarbamate isopropyl N- (m-chlorophenyl carbamate 4-chloro-2-butynyl N-(m-chlorophenyDcarbamate methyl N- (3,4-dichlorophenyl) carbamate Phenols dinitro-o-(sec.-butyl)phenol and its salts pentachlorophenol and its salts Substituted ureas 3-(3,4-dichlorophenyl)-1,1-dimethylurea 3- (4-chlorophenyl) 1,1-dimethylurea 3-phenyl-1,1-dimethylurea 3-(3,4-dichlorophenyl -3-methoxy-1, l-dimethylurea 3-(4-chlorophenyl)-3-methoxy-1,1-dimethylurea 3-( 3 ,4-dichlorophenyl )-1-n-butyl-1-methylurea 3-( 3,4-dichlorophenyl) -1-methoxyl-methylurea 3- (4-ch1orophenyl) -1-methoxy-1-methylu.rea

3-( 3 ,4-dichlorophenyl)-1,1;,3-trimethylurea 3-( 3,4-dichlorophenyl)-1,1-diethylurea dichloral urea Substituted triazines 2-chloro-4,6-bis(ethylamino) -s-triazine 2-chloro-4-ethylamino-6-isopropylamino-s-triazine 2-chloro-4,6-bis (methoxypropylamino -s-triazine 2-methoxy-4,6-bis (isopropylamino) -s-triaz.ine 2-chloro 4-'ethylamino-6 3-rnethoxypropylamino -striazine Z-methylmercap to-4,6-bis i'sopropylamino) -s-triazine 2-methylmercapto-4,6-bis(ethylarnino) -s-triazine Z-methylmercapto-4-ethylamino-6-isopropylamino-striazine 2-chl0ro-4, 6-bis isopropylamino) -s-triazine 2-methoxy-4,6-bi s (ethylamino) -s-triazine 2-methoxy-4-ethylamino-6-isopropylamino-s-triazine Z-methylmercaptol- 2-methoxyethylamino -6-isopropylamino-s-triazine Diphenyl ether derivatives 2,4-dichloro-4-nitrodiphenyl ether 2,4,6-trichloro-4'-nitrodiphenyl ether 2,4-dichl0ro-6-fiuor0-4'-nitrodiphenyl ether 3-methyl-4'-nitrodiphenyl ether 3,5-dimethyl-4-nitrodiphenyl ether 2,4'-dinitro-4-trifluoromethyldiphenyl ether Anilides N- (3 ,4-dichlorophenyl propionamide N- (3 ,4-dichloropheny1) methacrylamide N- (3 -chloro-4-methylphenyl) -2-methylpentanamide N- (3 ,4-dichlorophenyl) trimethylacetamide N- 3 ,4-dichlorophenyl) -a, m-dimethylvaleramide U racils 5-br0mo-3 -s-butyl-6-methyluracil 5-bromo-3-cyclohexyl-1,6-dimethyluracil 3-cyclohexyl-5,6-trimethyleneuracil 5-brorno-3-isopropyl-6-methy1uracil 3-tert-butyl 5-chloro-6-methyluraci1 Nitriles 2-6-dich1orobenz0nitrile diphenylacetonitrile 3,5-dibromo-4-hydroxybenzonitrile 3,S-diiodo-4-hydroxybenzonitrile Other organic herbicides 2-chloro-N,N-diallylacetamide N-( l, l-dimethyl-Zpropynyl -3,5-dichl0robenzamide maleic hydrazide 3 amino- 1,2,4-triazole monosodium methanearsonate disodium methanearsonate N,N-dimethyl-m,a-diphenylacetamide N,N-di-(n-propyl)-2,G-dinitro-4trifiuoromethylaniline N,N-din-propyl) -2,6-dinitro-4-methylaniline N ,N-di n-propyl -2,6-dinitro-4-methylsulfonylaniline 0- (2,4-dichlorophenyl) -O-methyl-isopropylphosphoramimidothioate 4-amino-3,5,6-trichloropicolinic acid 2,3-dichloro-1,4-naphthoquinone di(methoxythiocarbonyl)disulfide 6,7-dihydrodipyrido[1,2-a:2',1'-c]pyrazidinium salts l,1'-dimethyl-4,4'-bipyridinium salt-s 3,4,5, 6-tetrahydro-3,5-dimethyl-2-thio-2H-1,3,S-

thiadiazine Other fungicides which may be combined with the compounds of this invention include dithiocarbamates and derivatives such as ferric dimethyldithiocarbamate (ferbam), zinc dimethyldithiocarbamate (zirarn), manganese ethylenebisdithiocarbamate (much) and its coordination product with zinc ion, zinc ethylenebisdithiocarbamate (zinez), tetramethylthiuram disulfide (thiram) and 3,5-dimethyl-1,3,5,2H-tetrahydrothiadiazine-Z-thione; nitrophenol derivatives such as dinitro-(l-methylheptyl) phenyl crotonate (dinocap), 2-sec-butyl-4,6-dinitrophenyl 3,3-dimethylacrylate (binapacryl) and 2-sec-butyl-4,6- dinitrophenyl isopropyl carbonate; heterocyclic structures such as N trichloromethylthio -tetrahydrophtha1imide (captan), N-trichloromethylthiopalimide (folpet), Z-heptadecyl-Z-imidazoline (glyodin), 2,4-dichlor0-6-(o-ch1oroanilo)-s-triazine, diethyl phthalimidophosphorothioate, 5 amino-l-[bis(dimethylamino)phosphinyl]-3-phenyl-1, 2,4-triazole, 2,3-dicyano-1,4-dithia-anthraquinone (dithianon), 2-thio-l,3-dithio[4,5-b1quinoxaline (thioquinox), 1 (hutylcarbamoyl) 2-benzimidazole carbamic acid methyl ester (benornyl), 4-(2-chlorophenylhydrazono)-3- methyl-S-isoxazolone and his (p-chlorophenyl)-3-pyridinemethanol; and miscellaneous fungicides such as dodecylquanidine acetate (dodine), 3-[2-(3,S-dimethyl-Z-oxycyclohexyl) 2 hydroxyethyflglutarimide (cycloheximide), phenylmercuric acetate, N-ethylmercuri-l,2,3,6-tetrahy- 21 dro 3,6-endomethano-3,4,5,6,7,7-hexachlorophthalimide, phenylmercuric monoethanolammonium lactate, 2,3-dichloro-lA-naphthoquinbne, pyridine-2-thiol-1-oxide, Bordeaux mixture and sulfur.

We claim: 1. A compound of the formula U29 l Hal =CHHal wherein R and R are methyl or ethyl;

X and X are hydrogen, bromo, chloro, fiuoro, methyl, ethyl or trifluoromethyl with the proviso that only one may be hydrogen;

Y is hydrogen, bromo, chloro, fiuoro or methyl; and

Hal is bromo or chloro, and the free bases thereof.

2. A compound according to claim 1 wherein Hal is chloro.

3. A compound according to claim 1 wherein Hal is bromo.

' 2 4. The compound according to claim 2 which is 2-(3,5-

5. The compound according to claim 2 which is 2-(3,5- dichlorophenyl) 4,4 dimethyl-S-chloromethylene-oxazoline.

6. The compound according to claim 2 which is 2-(3- chlorophenyl) 4,4-dimethyl-5-chloromethylcne-oxazoline hydrochloride.

.7. The compound according to claim 2 which is 2-(3- trifluoromethylphenyl) 4,4-dimethyl-S-chloromethyleneoxazoline hydrochloride.

8 The compound according to claim 2 which is 2-(3,5- dibr omophenyl) 4,4-dimethyl-5-chloromethylene-oxazoline hydrochloride.

3., The compound according to claim 3 which is 2-(3,5- dichlorophenyl) 4,4-dimethyl-S-bromomethylene-oxazo- 15 line. hydrobromide.

10. The compound according to claim 3 which is Z (3,5-dichlorophenyl)-4,4-dimethyl-S-bromomethyleneoxazoline.

References Cited UNITED STATES PATENTS 3,278,544 10/1966 Easton 260-307 ALEX MAZEL, Primary Examiner R. V. RUSH, Assistant Examiner US. Cl. X.R. 71-88; 424-272 

